Tron remains one of the most divisive decks in Modern; players either love it or hate it. It's so frustrating when your opponent gets natural Tron on turn three, yet it's so satisfying when you are the pilot. It's why the strategy has remained a constant feature of the format. Similar to Jund, Tron offers solid consistency and high card quality which makes the strategy an excellent choice to pick up, even if you are a beginner to Modern.

In essence, Tron is a ramp-focused strategy that cares about assembling the "UrzaTron" lands as early as possible. Casting a turn-three Karn Liberated is a hell of a play and tough to beat. Not to mention Ugin, the Spirit Dragon can follow it the turn after. Tron is also incredibly resilient—cards such as Wurmcoil Engine and Walking Ballista can break up complicated board stalls. Even Ulamog, the Ceaseless Hunger can remove tricky permanents thanks to its cast trigger. Tron is a gnarly deck that often elicits disdain from other players, given the inherent power level the strategy employs. Mono-Green Tron is often misunderstood given the play patterns; however, it's easy to pick up but challenging to master.

So, if you can't beat it, why not join them?

Thanks to the release of Double Masters (or should it be called Artifact Masters?), a significant amount of Mono-Green Tron is about to be reprinted. As a result, the price of expensive staples such as Karn Liberated and Wurmcoil Engine will likely decrease when the set arrives on August 7th, providing you with the option to pick up cards at an affordable rate. Even outside of the mythics, desirable commons such as Chromatic Star, Expedition Map and Ancient Stirrings are all returning in Double Masters making these convenient to acquire. 

Budget Mono-Green Tron

Now is an excellent time to talk about building Mono-Green Tron on a budget. Fully upgraded Tron can range to about $550, and this is without Double Masters product flooding the market. $550 for an established Modern strategy is an achievable amount, making this even more comfortable once the set is out next week. Building Mono-Green Tron on a budget is relatively easy as the core is already affordable, including the land base. What drives up the price are the threats, which I've made compromises on until you can upgrade the strategy. 

Magic: The Gathering TCG Deck - Mono-Green Tron (Budget) by Emmmzyne

'Mono-Green Tron (Budget)' - constructed deck list and prices for the Magic: The Gathering Trading Card Game from TCGplayer Infinite!

Created By: Emmmzyne

Event:

Rank:

Modern

Market Price: $108.11

Cards

Ulamog's Crusher

Market Price: $0.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/180866_200w.jpg

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)
Ulamog's Crusher attacks each combat if able.

Buy This Card! https://shop.tcgplayer.com/magic/ultimate-masters/ulamogs-crusher

Oblivion Stone

Market Price: $2.03

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218880_200w.jpg

{4}, {T}: Put a fate counter on target permanent.
{5}, {T}, Sacrifice Oblivion Stone: Destroy each nonland permanent without a fate counter on it, then remove all fate counters from all permanents.

Buy This Card! https://shop.tcgplayer.com/magic/double-masters/oblivion-stone

Wilt

Color Identity:G

Market Price: $0.11

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/212274_200w.jpg

Destroy target artifact or enchantment.
Cycling {2} ({2}, Discard this card: Draw a card.)

Buy This Card! https://shop.tcgplayer.com/magic/ikoria-lair-of-behemoths/wilt

Meteor Golem

Market Price: $0.17

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/216117_200w.jpg

When Meteor Golem enters the battlefield, destroy target nonland permanent an opponent controls.

Buy This Card! https://shop.tcgplayer.com/magic/jumpstart/meteor-golem

Thragtusk

Color Identity:G

Market Price: $0.25

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218622_200w.jpg

When Thragtusk enters the battlefield, you gain 5 life.
When Thragtusk leaves the battlefield, create a 3/3 green Beast creature token.

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Sorcerous Spyglass

Market Price: $0.20

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/198975_200w.jpg

As Sorcerous Spyglass enters the battlefield, look at an opponent's hand, then choose any card name.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.

Buy This Card! https://shop.tcgplayer.com/magic/throne-of-eldraine/sorcerous-spyglass

Urza's Mine

Market Price: $0.63

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218281_200w.jpg

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

Buy This Card! https://shop.tcgplayer.com/magic/double-masters/urzas-mine

Dismember

Color Identity:B

Market Price: $2.28

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/98390_200w.jpg

({B/P} can be paid with either {B} or 2 life.)
Target creature gets -5/-5 until end of turn.

Buy This Card! https://shop.tcgplayer.com/magic/modern-masters-2015/dismember

Expedition Map

Market Price: $0.82

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218259_200w.jpg

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, and put it into your hand. Then shuffle your library.

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Urza's Tower

Market Price: $0.49

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218285_200w.jpg

{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

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Torpor Orb

Market Price: $4.76

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/39593_200w.jpg

Creatures entering the battlefield don't cause abilities to trigger.

Buy This Card! https://shop.tcgplayer.com/magic/new-phyrexia/torpor-orb

Urza's Power Plant

Market Price: $0.61

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218284_200w.jpg

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

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Liquimetal Coating

Market Price: $1.41

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/166861_200w.jpg

{T}: Target permanent becomes an artifact in addition to its other types until end of turn.

Buy This Card! https://shop.tcgplayer.com/magic/commander-anthology-volume-ii/liquimetal-coating

Ugin, the Ineffable

Market Price: $2.86

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/188862_200w.jpg

Colorless spells you cast cost {2} less to cast.
+1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand.
−3: Destroy target permanent that's one or more colors.

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Grafdigger's Cage

Market Price: $1.58

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/192909_200w.jpg

Creature cards in graveyards and libraries can't enter the battlefield.
Players can't cast spells from graveyards or libraries.

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All Is Dust

Market Price: $6.28

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/180778_200w.jpg

Each player sacrifices all colored permanents they control.

Buy This Card! https://shop.tcgplayer.com/magic/ultimate-masters/all-is-dust

Clockwork Dragon

Market Price: $0.49

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/11470_200w.jpg

Flying
Clockwork Dragon enters the battlefield with six +1/+1 counters on it.
Whenever Clockwork Dragon attacks or blocks, remove a +1/+1 counter from it at end of combat.
{3}: Put a +1/+1 counter on Clockwork Dragon.

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Forest

Color Identity:G

Market Price: $0.16

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/222825_200w.jpg

({T}: Add {G}.)

Buy This Card! https://shop.tcgplayer.com/magic/zendikar-rising/forest

Karn, the Great Creator

Market Price: $6.53

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/188386_200w.jpg

Activated abilities of artifacts your opponents control can't be activated.
+1: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost.
−2: You may reveal an artifact card you own from outside the game or choose a face-up artifact card you own in exile. Put that card into your hand.

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World Breaker

Color Identity:G

Market Price: $2.85

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/110837_200w.jpg

Devoid (This card has no color.)
When you cast this spell, exile target artifact, enchantment, or land.
Reach
{2}{C}, Sacrifice a land: Return World Breaker from your graveyard to your hand. ({C} represents colorless mana.)

Buy This Card! https://shop.tcgplayer.com/magic/oath-of-the-gatewatch/world-breaker

Sylvan Scrying

Color Identity:G

Market Price: $0.76

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/105272_200w.jpg

Search your library for a land card, reveal it, and put it into your hand. Then shuffle your library.

Buy This Card! https://shop.tcgplayer.com/magic/battle-for-zendikar/sylvan-scrying

Ancient Stirrings

Color Identity:G

Market Price: $0.22

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/219003_200w.jpg

Look at the top five cards of your library. You may reveal a colorless card from among them and put it into your hand. Then put the rest on the bottom of your library in any order. (Cards with no colored mana in their mana costs are colorless. Lands are also colorless.)

Buy This Card! https://shop.tcgplayer.com/magic/double-masters/ancient-stirrings

Chromatic Sphere

Market Price: $1.46

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/216112_200w.jpg

{1}, {T}, Sacrifice Chromatic Sphere: Add one mana of any color. Draw a card.

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Platinum Angel

Market Price: $10.31

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/222345_200w.jpg

Flying
You can't lose the game and your opponents can't win the game.

Buy This Card! https://shop.tcgplayer.com/magic/the-list/platinum-angel

Chromatic Star

Market Price: $0.44

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218825_200w.jpg

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color.
When Chromatic Star is put into a graveyard from the battlefield, draw a card.

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Relic of Progenitus

Market Price: $2.35

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/118645_200w.jpg

{T}: Target player exiles a card from their graveyard.
{1}, Exile Relic of Progenitus: Exile all cards from all graveyards. Draw a card.

Buy This Card! https://shop.tcgplayer.com/magic/eternal-masters/relic-of-progenitus

Sanctum of Ugin

Market Price: $0.90

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/105304_200w.jpg

{T}: Add {C}.
Whenever you cast a colorless spell with converted mana cost 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle your library.

Buy This Card! https://shop.tcgplayer.com/magic/battle-for-zendikar/sanctum-of-ugin

Sundering Titan

Market Price: $0.28

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218467_200w.jpg

When Sundering Titan enters the battlefield or leaves the battlefield, choose a land of each basic land type, then destroy those lands.

Buy This Card! https://shop.tcgplayer.com/magic/double-masters/sundering-titan

Blast Zone

Market Price: $3.48

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/188636_200w.jpg

Blast Zone enters the battlefield with a charge counter on it.
{T}: Add {C}.
{X}{X}, {T}: Put X charge counters on Blast Zone.
{3}, {T}, Sacrifice Blast Zone: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Blast Zone.

Buy This Card! https://shop.tcgplayer.com/magic/war-of-the-spark/blast-zone

As a starting point, this is an excellent entry into Mono-Green Tron. As mentioned above, you don't have access to the best threats, but this list will give you an idea of how to play the strategy and will grab wins. Clockwork Dragon makes a decent imitation of Walking Ballista, and despite offering less flexibility, it can win games. If you have them, Hangarback Walker is also a suitable alternative which makes for an adequate mana sink.

World Breaker sees regular play in Tron and is often a hedge in control-heavy metagames. While powerful, the earliest you can cast it is turn four, which is acceptable in this build. Rounding out our threats are Limited bombs Meteor Golem and Ulamog's Crusher, which do a decent impression of Karn Liberated and Ulamog, the Ceaseless Hunger. Due to the threats being somewhat lower in power compared to their optimal counterparts, I've introduced All Is Dust and Oblivion Stone as a way to deal with opposing threats. Also, they buys you more time to assemble Tron and control the board state. 

Semi-Optimal Mono-Green Tron

In regards to upgrades, there are a few routes you can go down. However, I recommend picking up Ugin, the Spirit Dragon first as it's currently Standard legal. It's important to garner mileage out of your purchases, and I recommend starting here. It's easy to want Karn Liberated first given it's the hallmark card of the strategy. However, at present, Karn Liberated is pricey, and it's important to have quantity over quality. Once you are comfortable with Budget Mono-Green Tron, I would begin upgrading to something like this.

Magic: The Gathering TCG Deck - Semi-Optimal Mono-Green Tron by Emmmzyne

'Semi-Optimal Mono-Green Tron' - constructed deck list and prices for the Magic: The Gathering Trading Card Game from TCGplayer Infinite!

Created By: Emmmzyne

Event:

Rank:

Modern

Market Price: $239.41

Cards

Ancient Stirrings

Color Identity:G

Market Price: $0.22

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/219003_200w.jpg

Look at the top five cards of your library. You may reveal a colorless card from among them and put it into your hand. Then put the rest on the bottom of your library in any order. (Cards with no colored mana in their mana costs are colorless. Lands are also colorless.)

Buy This Card! https://shop.tcgplayer.com/magic/double-masters/ancient-stirrings

Urza's Power Plant

Market Price: $0.61

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218284_200w.jpg

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

Buy This Card! https://shop.tcgplayer.com/magic/double-masters/urzas-power-plant

Grafdigger's Cage

Market Price: $1.58

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/192909_200w.jpg

Creature cards in graveyards and libraries can't enter the battlefield.
Players can't cast spells from graveyards or libraries.

Buy This Card! https://shop.tcgplayer.com/magic/core-set-2020/grafdiggers-cage

Emrakul, the Promised End

Market Price: $34.68

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/119260_200w.jpg

This spell costs {1} less to cast for each card type among cards in your graveyard.
When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn.
Flying, trample, protection from instants

Buy This Card! https://shop.tcgplayer.com/magic/eldritch-moon/emrakul-the-promised-end

Ensnaring Bridge

Market Price: $15.50

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218601_200w.jpg

Creatures with power greater than the number of cards in your hand can't attack.

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Trinisphere

Market Price: $11.94

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218573_200w.jpg

As long as Trinisphere is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)

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Walking Ballista

Market Price: $9.26

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218628_200w.jpg

Walking Ballista enters the battlefield with X +1/+1 counters on it.
{4}: Put a +1/+1 counter on Walking Ballista.
Remove a +1/+1 counter from Walking Ballista: It deals 1 damage to any target.

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Sorcerous Spyglass

Market Price: $0.20

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/198975_200w.jpg

As Sorcerous Spyglass enters the battlefield, look at an opponent's hand, then choose any card name.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.

Buy This Card! https://shop.tcgplayer.com/magic/throne-of-eldraine/sorcerous-spyglass

Platinum Angel

Market Price: $10.31

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/222345_200w.jpg

Flying
You can't lose the game and your opponents can't win the game.

Buy This Card! https://shop.tcgplayer.com/magic/the-list/platinum-angel

Ugin, the Ineffable

Market Price: $2.86

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/188862_200w.jpg

Colorless spells you cast cost {2} less to cast.
+1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand.
−3: Destroy target permanent that's one or more colors.

Buy This Card! https://shop.tcgplayer.com/magic/war-of-the-spark/ugin-the-ineffable

Wilt

Color Identity:G

Market Price: $0.11

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/212274_200w.jpg

Destroy target artifact or enchantment.
Cycling {2} ({2}, Discard this card: Draw a card.)

Buy This Card! https://shop.tcgplayer.com/magic/ikoria-lair-of-behemoths/wilt

Veil of Summer

Color Identity:G

Market Price: $7.86

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/192543_200w.jpg

Draw a card if an opponent has cast a blue or black spell this turn. Spells you control can't be countered this turn. You and permanents you control gain hexproof from blue and from black until end of turn. (You and they can't be the targets of blue or black spells or abilities your opponents control.)

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Torpor Orb

Market Price: $4.76

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/39593_200w.jpg

Creatures entering the battlefield don't cause abilities to trigger.

Buy This Card! https://shop.tcgplayer.com/magic/new-phyrexia/torpor-orb

All Is Dust

Market Price: $6.28

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/180778_200w.jpg

Each player sacrifices all colored permanents they control.

Buy This Card! https://shop.tcgplayer.com/magic/ultimate-masters/all-is-dust

Blast Zone

Market Price: $3.48

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/188636_200w.jpg

Blast Zone enters the battlefield with a charge counter on it.
{T}: Add {C}.
{X}{X}, {T}: Put X charge counters on Blast Zone.
{3}, {T}, Sacrifice Blast Zone: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Blast Zone.

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Ulamog's Crusher

Market Price: $0.24

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/180866_200w.jpg

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)
Ulamog's Crusher attacks each combat if able.

Buy This Card! https://shop.tcgplayer.com/magic/ultimate-masters/ulamogs-crusher

Forest

Color Identity:G

Market Price: $0.16

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/222825_200w.jpg

({T}: Add {G}.)

Buy This Card! https://shop.tcgplayer.com/magic/zendikar-rising/forest

Sanctum of Ugin

Market Price: $0.90

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/105304_200w.jpg

{T}: Add {C}.
Whenever you cast a colorless spell with converted mana cost 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle your library.

Buy This Card! https://shop.tcgplayer.com/magic/battle-for-zendikar/sanctum-of-ugin

World Breaker

Color Identity:G

Market Price: $2.85

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/110837_200w.jpg

Devoid (This card has no color.)
When you cast this spell, exile target artifact, enchantment, or land.
Reach
{2}{C}, Sacrifice a land: Return World Breaker from your graveyard to your hand. ({C} represents colorless mana.)

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Chromatic Sphere

Market Price: $1.46

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/216112_200w.jpg

{1}, {T}, Sacrifice Chromatic Sphere: Add one mana of any color. Draw a card.

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Meteor Golem

Market Price: $0.17

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/216117_200w.jpg

When Meteor Golem enters the battlefield, destroy target nonland permanent an opponent controls.

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Sylvan Scrying

Color Identity:G

Market Price: $0.76

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/105272_200w.jpg

Search your library for a land card, reveal it, and put it into your hand. Then shuffle your library.

Buy This Card! https://shop.tcgplayer.com/magic/battle-for-zendikar/sylvan-scrying

Thragtusk

Color Identity:G

Market Price: $0.25

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218622_200w.jpg

When Thragtusk enters the battlefield, you gain 5 life.
When Thragtusk leaves the battlefield, create a 3/3 green Beast creature token.

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Expedition Map

Market Price: $0.82

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218259_200w.jpg

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, and put it into your hand. Then shuffle your library.

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Urza's Mine

Market Price: $0.63

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218281_200w.jpg

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

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Urza's Tower

Market Price: $0.49

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218285_200w.jpg

{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

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Liquimetal Coating

Market Price: $1.41

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/166861_200w.jpg

{T}: Target permanent becomes an artifact in addition to its other types until end of turn.

Buy This Card! https://shop.tcgplayer.com/magic/commander-anthology-volume-ii/liquimetal-coating

Sundering Titan

Market Price: $0.28

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218467_200w.jpg

When Sundering Titan enters the battlefield or leaves the battlefield, choose a land of each basic land type, then destroy those lands.

Buy This Card! https://shop.tcgplayer.com/magic/double-masters/sundering-titan

Karn, the Great Creator

Market Price: $6.53

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/188386_200w.jpg

Activated abilities of artifacts your opponents control can't be activated.
+1: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost.
−2: You may reveal an artifact card you own from outside the game or choose a face-up artifact card you own in exile. Put that card into your hand.

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Ugin, the Spirit Dragon

Market Price: $20.00

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/215338_200w.jpg

+2: Ugin, the Spirit Dragon deals 3 damage to any target.
−X: Exile each permanent with converted mana cost X or less that's one or more colors.
−10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield.

Buy This Card! https://shop.tcgplayer.com/magic/core-set-2021/ugin-the-spirit-dragon

Chromatic Star

Market Price: $0.44

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/218825_200w.jpg

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color.
When Chromatic Star is put into a graveyard from the battlefield, draw a card.

Buy This Card! https://shop.tcgplayer.com/magic/double-masters/chromatic-star

Relic of Progenitus

Market Price: $2.35

ImageURL: https://tcgplayer-cdn.tcgplayer.com/product/118645_200w.jpg

{T}: Target player exiles a card from their graveyard.
{1}, Exile Relic of Progenitus: Exile all cards from all graveyards. Draw a card.

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Here are the upgrades I would do, and the order I'd do them in: 

Maindeck

Sideboard

Ugin, the Spirit Dragon saw a much-needed reprint in Core Set 2021, which lowered its price by a third in comparison to its Fate Reforged printing. Accordingly, it remains an expensive card but more attainable compared to before. 

Usually a two-of, Ugin, the Spirit Dragon is a commanding threat thanks to its minus ability. In recent times, Ugin, the Spirit Dragon has seen infrequent play as it offers little impact against Mono-Red and other aggressive archetypes. Despite this, I've kept Ugin in as it remains a potent threat independently. However, you can always tailor your build to offer more lifegain with cards like Thragtusk to shore up against aggressive archetypes. Replacing Oblivion Stone may seem an odd choice given its deep use in Tron previously, but there are better options. However, you can add a copy to the sideboard to find with Karn, the Great Creator if you want the insurance.

Rounding out these upgrades is the sideboard which features wish targets for Karn, the Great Creator in Trinisphere and Ensnaring Bridge. Trinisphere answers combo and spell-dense strategies and Ensnaring Bridge roadblocks aggression while you can win with Ugin, the Spirit Dragon or Emrakul, the Promised End. Lastly, Veil of Summer is a fantastic deterrent against Jund and control. 

Optimal Mono-Green Tron

Once you have a semi-optimal list, I would start looking at Wurmcoil Engine, Ulamog, the Ceaseless Hunger and Karn Liberated to upgrade into the optimal version of Tron.

Magic: The Gathering TCG Deck - Mono-Green Tron (Optimal) by Emmmzyne

'Mono-Green Tron (Optimal)' - constructed deck list and prices for the Magic: The Gathering Trading Card Game from TCGplayer Infinite!

Created By: Emmmzyne

Event:

Rank:

Modern

Market Price: $447.67

Cards

Ulamog, the Ceaseless Hunger

Market Price: $42.76

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When you cast this spell, exile two target permanents.
Indestructible
Whenever Ulamog, the Ceaseless Hunger attacks, defending player exiles the top twenty cards of their library.

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Ugin, the Spirit Dragon

Market Price: $20.00

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+2: Ugin, the Spirit Dragon deals 3 damage to any target.
−X: Exile each permanent with converted mana cost X or less that's one or more colors.
−10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield.

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Spatial Contortion

Market Price: $0.26

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({C} represents colorless mana.)
Target creature gets +3/-3 until end of turn.

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Ensnaring Bridge

Market Price: $15.50

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Creatures with power greater than the number of cards in your hand can't attack.

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Blast Zone

Market Price: $3.48

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Blast Zone enters the battlefield with a charge counter on it.
{T}: Add {C}.
{X}{X}, {T}: Put X charge counters on Blast Zone.
{3}, {T}, Sacrifice Blast Zone: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Blast Zone.

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Urza's Power Plant

Market Price: $0.61

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{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

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Emrakul, the Promised End

Market Price: $34.68

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This spell costs {1} less to cast for each card type among cards in your graveyard.
When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn.
Flying, trample, protection from instants

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Sundering Titan

Market Price: $0.28

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When Sundering Titan enters the battlefield or leaves the battlefield, choose a land of each basic land type, then destroy those lands.

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Ugin, the Ineffable

Market Price: $2.86

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Colorless spells you cast cost {2} less to cast.
+1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand.
−3: Destroy target permanent that's one or more colors.

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Sanctum of Ugin

Market Price: $0.90

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{T}: Add {C}.
Whenever you cast a colorless spell with converted mana cost 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle your library.

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Trinisphere

Market Price: $11.94

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As long as Trinisphere is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)

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Expedition Map

Market Price: $0.82

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{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, and put it into your hand. Then shuffle your library.

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Chromatic Star

Market Price: $0.44

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{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color.
When Chromatic Star is put into a graveyard from the battlefield, draw a card.

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Forest

Color Identity:G

Market Price: $0.16

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({T}: Add {G}.)

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Liquimetal Coating

Market Price: $1.41

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{T}: Target permanent becomes an artifact in addition to its other types until end of turn.

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Walking Ballista

Market Price: $9.26

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Walking Ballista enters the battlefield with X +1/+1 counters on it.
{4}: Put a +1/+1 counter on Walking Ballista.
Remove a +1/+1 counter from Walking Ballista: It deals 1 damage to any target.

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Sorcerous Spyglass

Market Price: $0.20

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As Sorcerous Spyglass enters the battlefield, look at an opponent's hand, then choose any card name.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.

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Urza's Mine

Market Price: $0.63

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{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

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Wilt

Color Identity:G

Market Price: $0.11

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Destroy target artifact or enchantment.
Cycling {2} ({2}, Discard this card: Draw a card.)

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Relic of Progenitus

Market Price: $2.35

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{T}: Target player exiles a card from their graveyard.
{1}, Exile Relic of Progenitus: Exile all cards from all graveyards. Draw a card.

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Karn Liberated

Market Price: $22.41

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+4: Target player exiles a card from their hand.
−3: Exile target permanent.
−14: Restart the game, leaving in exile all non-Aura permanent cards exiled with Karn Liberated. Then put those cards onto the battlefield under your control.

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Urza's Tower

Market Price: $0.49

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{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

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Ancient Stirrings

Color Identity:G

Market Price: $0.22

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Look at the top five cards of your library. You may reveal a colorless card from among them and put it into your hand. Then put the rest on the bottom of your library in any order. (Cards with no colored mana in their mana costs are colorless. Lands are also colorless.)

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Chromatic Sphere

Market Price: $1.46

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{1}, {T}, Sacrifice Chromatic Sphere: Add one mana of any color. Draw a card.

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Wurmcoil Engine

Market Price: $15.63

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Deathtouch, lifelink
When Wurmcoil Engine dies, create a 3/3 colorless Wurm artifact creature token with deathtouch and a 3/3 colorless Wurm artifact creature token with lifelink.

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Veil of Summer

Color Identity:G

Market Price: $7.86

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Draw a card if an opponent has cast a blue or black spell this turn. Spells you control can't be countered this turn. You and permanents you control gain hexproof from blue and from black until end of turn. (You and they can't be the targets of blue or black spells or abilities your opponents control.)

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Thragtusk

Color Identity:G

Market Price: $0.25

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When Thragtusk enters the battlefield, you gain 5 life.
When Thragtusk leaves the battlefield, create a 3/3 green Beast creature token.

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Sylvan Scrying

Color Identity:G

Market Price: $0.76

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Search your library for a land card, reveal it, and put it into your hand. Then shuffle your library.

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Karn, the Great Creator

Market Price: $6.53

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Activated abilities of artifacts your opponents control can't be activated.
+1: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost.
−2: You may reveal an artifact card you own from outside the game or choose a face-up artifact card you own in exile. Put that card into your hand.

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These are the last upgrades, and I would suggest doing them in this order:

Maindeck

Most of Tron's price is tied up in these ten cards, especially Ulamog, the Ceaseless Hunger. Ulamog has managed to retain its price due to being the headline mythic in a set that was printed in 2015, not to mention its application in Commander and Pioneer. Fortunately, most Mono-Green Tron lists only run two, which makes this more manageable to obtain. Wurmcoil Engine and Karn Liberated are the two essential pickups here which are staples of the strategy. As mentioned earlier, these will be available in Double Masters so I recommend holding off until then, unless you find a reasonable pre-order price.

Otherwise, that's it! Tron is pretty straightforward to upgrade as it's a handful of cards that elevate the cost of the strategy. 

Similar to last week with Death & Taxes, there are a few different flavors of Tron you can switch to if you fancy something off-beat. I have covered these in previous articles: 

Thanks to sets such as Double Masters, Modern is becoming more affordable than ever. Although there is extensive criticism about the set's pricing structure, it creates an excellent window to pick up Modern staples at a lower price. Unfortunately, this may not be a permanent fixture given the limited print run of these sets, so I'd recommend picking up pieces as soon as the set drops.

Regardless, Mono-Green Tron is an excellent starting point to get into Modern. It's powerful, consistent, and will remain playable in years to come. Plus, in every game you have a chance to naturally draw Tron, and who doesn't love that?